[8c] Erasmus Darwin, by Ernest Krause, pp. 132, 133.
[9a] Origin of Species, ed. i., p. 242.
[9b] Ibid., p. 427.
[10a] Nineteenth Century, November 1878; Evolution, Old and New, pp. 360. 361.
[10b] Encyclopædia Britannica, ed. ix., art. “Evolution,” p. 748.
[11] Ibid.
[17] Encycl. Brit., ed. ix., art. “Evolution,” p. 750.
[23a] Origin of Species, 6th ed., 1876, p. 206.
[23b] Ibid., p. 233.
[24a] Origin of Species, 6th ed., p. 171, 1876.